[c-nsp] can I use | pipe line such as "| inc xxx" and regexp such as "regexp ^$" both , when I execute "show bgp "

[Mark Tinka]

On Wednesday, September 29, 2010 03:36:38 pm Peter Rathlev 
wrote:

> Just the lack of clarity in documentation and/or lack of

I haven't had a chance to deploy kinky stuff with IOS XR 
(our boxes are core nodes, and the most interesting things 
are IS-IS, IPv6 and LDP, hehe).

But all commands and the features they provide are very-well 
documented on www.cisco.com'. I was able to use the Master 
Command reference to convert my ex-JUNOS core nodes to IOS 
XR (considering those were previously converted from IOS to 
JUNOS) without a single e-mail/call to my SE or TAC. Line 
for line.

With regard to scenario's, yes, I'd say that is lacking when 
compared to IOS, but then again, IOS has been around for a 
little bit.

I will admit, IOS XR was a little shady in the beginning, 
but 3.9.1 (I haven't used anything earlier) is quite there. 
You even get some pretty cool stuff on the ASR9000 like a 
BGP-signaled VPLS implementation, among other edge features 
already available in IOS.

> features when using "show bgp ...".

There's a number of things they don't have, and this is to 
be expected for a box that is still fairly new on the scene. 
IOS XR 4.0 and later will bring a ton of features, not least 
of which is BFD for LACP links (not that it works, but...).

And someone else already mentioned, 3.8 brought with it some 
BGP switches that can do the stuff you're looking for. Later 
releases will simply make it more elegant.

> I don't know the
> platform myself, I was just surprised that a thing like
> combining regexp/quote-regexp and an include doesn't
> work in at least 3.6.3.

Haven't used 3.6.anything, but it sounds a little dated 
unless TAC are recommending it (which I'd find curious, 
but...).

> >From what I hear in other places the CRS-1 is a nice
> >box. :-)

I do have to agree here. It is a pretty decent box - I mean, 
the interface with the CLI is still not probably as great as 
JUNOS, in as far as its intuition with the rest of 
configuration goes, but it's far better than IOS.

Upgrading the box via SMU's while it's in-service is a huge 
plus. Even if some SMU's will need to reload part of the 
forwarding engine or bits of the control plane now and then, 
it's still better than a total reload.

And the one really cool thing I found was how easy the 
multi-chassis architecture really is. It sounds daunting if 
you haven't read or about or seen it in action, but once you 
have, you can do it with one eye closed at midday on a 
Tuesday including a break for lunch mid-way :-).

All-in-all, not a bad box. Definitely worth considering if 
you're looking to beef up your core, particularly for the 
interesting deals Cisco can offer when compared to the 
competition, including in-house, i.e., XR 12000.

Cheers,

Mark.
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